{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-6HN42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-6HN42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-6HN42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-6HN42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-6HN42-0AA0, 4-pole molded case circuit breaker, 40 A rated current, 480 A frame, ETU350 electronic release, 242 kA interrupting at 240 V, IP40 front.","salesMarkdown":"It carries a continuous rated current of 40 A across the full ambient range from 40 °C to 70 °C, meaning no derating is needed for elevated panel temperatures up to 70 °C. Interrupting capacity reaches 242 kA at 240 V, 187 kA at 415 V, and 121 kA at 500 V. At 690 V it drops to 3 kA, so this breaker is best applied on 480 V or lower systems where fault currents can exceed 100 kA — typical for large transformer secondaries or busway feeds. ## Mechanical fit and panel integration Dimensions are 86 mm deep, 140 mm wide, and 181 mm tall. The 4-pole form factor fits standard Siemens SENTRON mounting bases and busbar systems. ## Electronic trip unit and monitoring Fitted with an ETU350 electronic overcurrent release — a microprocessor-based trip unit offering adjustable LSI protection curves (long-time, short-time, instantaneous).","metaTitle":"Siemens 3VA2040-6HN42-0AA0 SENTRON MCCB, 4P, 40A, ETU350, 48","metaDescription":"Siemens SENTRON 3VA2040-6HN42-0AA0 molded case circuit breaker, 4-pole, 40 A rated at 40 °C, 480 A frame, ETU350 release, 242 kA at 240 V. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","Height":"181 mm","Maximum":"480 A","Minimum":"480 A","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 kA","at 690 V":"3 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"40 A","at 60 °C":"40 A","at 65 °C":"40 A","at 70 °C":"40 A","Depth [In]":"3.39 in","Width [In]":"5.51 in","Height [In]":"7.13 in","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"2.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU350","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 100%","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"100 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"H","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6c514dc6b17221944024336c66d2af42.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=277012&mlfb=3VA2040-6HN42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-6HN42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA2040-6HN42-0AA0 and how is it quoted for volume purchases?","answer":"This part is sourced and quoted to order through independent distribution. Availability and current pricing are confirmed at quote time against an RFQ."},{"question":"When sourcing 3VA2040-6HN42-0AA0, what's the closest functional second-source?","answer":"The peer 3VA2040-8HN42-0AA0 shares the same 4-pole, 40 A, ETU350 release and 480 A frame. It drops into the same panel footprint without rewiring, but verify the interrupting rating differences at your system voltage before substituting."},{"question":"What is 3VA2040-6HN42-0AA0's listed depth (86 mm) on this component line?","answer":"The depth is 86 mm."},{"question":"What is 3VA2040-6HN42-0AA0's listed width (140 mm) on this component line?","answer":"The width is 140 mm."},{"question":"Will 3VA2040-6HN42-0AA0 drop into a panel that was specified around 3VA2040-8HN42-0AA0 without rewiring?","answer":"Yes, both share the same 4-pole form factor, 40 A rating, and 480 A frame, so mechanical fit and busbar connections are identical. No rewiring is needed."},{"question":"What compliance documentation does this brand provide for 3VA2040-6HN42-0AA0 (RoHS, REACH, UL, IEC)?","answer":"The evidence does not list specific compliance certificates, but Siemens SENTRON MCCBs typically carry UL 489, IEC 60947-2, and RoHS/REACH declarations. Request the manufacturer's declaration at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-6HN42-0AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA2040-6HN42-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}